488 lines
9.4 KiB
C++
488 lines
9.4 KiB
C++
/**
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* @file llsky.cpp
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* @brief IndraWorld sky class
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*
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* $LicenseInfo:firstyear=2000&license=viewergpl$
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*
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* Copyright (c) 2000-2009, Linden Research, Inc.
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*
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* Second Life Viewer Source Code
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* The source code in this file ("Source Code") is provided by Linden Lab
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* to you under the terms of the GNU General Public License, version 2.0
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* ("GPL"), unless you have obtained a separate licensing agreement
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* ("Other License"), formally executed by you and Linden Lab. Terms of
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* the GPL can be found in doc/GPL-license.txt in this distribution, or
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* online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
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*
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* There are special exceptions to the terms and conditions of the GPL as
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* it is applied to this Source Code. View the full text of the exception
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* in the file doc/FLOSS-exception.txt in this software distribution, or
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* online at
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* http://secondlifegrid.net/programs/open_source/licensing/flossexception
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*
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* By copying, modifying or distributing this software, you acknowledge
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* that you have read and understood your obligations described above,
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* and agree to abide by those obligations.
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*
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* ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
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* WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
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* COMPLETENESS OR PERFORMANCE.
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* $/LicenseInfo$
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*/
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// Ideas:
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// -haze should be controlled by global query from sims
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// -need secondary optical effects on sun (flare)
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// -stars should be brought down from sims
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// -star intensity should be driven by global ambient level from sims,
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// so that eclipses, etc can be easily done.
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//
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#include "llviewerprecompiledheaders.h"
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#include "llsky.h"
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// linden library includes
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#include "llerror.h"
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#include "llmath.h"
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#include "math.h"
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#include "v4color.h"
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#include "llviewerobjectlist.h"
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#include "llviewerobject.h"
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#include "llviewercamera.h"
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#include "pipeline.h"
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#include "lldrawpool.h"
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#include "llvosky.h"
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#include "llcubemap.h"
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#include "llviewercontrol.h"
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#include "llvowlsky.h"
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F32 azimuth_from_vector(const LLVector3 &v);
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F32 elevation_from_vector(const LLVector3 &v);
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LLSky gSky;
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// ---------------- LLSky ----------------
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const F32 LLSky::NIGHTTIME_ELEVATION = -8.0f; // degrees
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const F32 LLSky::NIGHTTIME_ELEVATION_COS = (F32)sin(NIGHTTIME_ELEVATION*DEG_TO_RAD);
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//////////////////////////////////////////////////////////////////////
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// Construction/Destruction
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//////////////////////////////////////////////////////////////////////
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LLSky::LLSky()
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{
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// Set initial clear color to black
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// Set fog color
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mFogColor.mV[VRED] = mFogColor.mV[VGREEN] = mFogColor.mV[VBLUE] = 0.5f;
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mFogColor.mV[VALPHA] = 0.0f;
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mLightingGeneration = 0;
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mUpdatedThisFrame = TRUE;
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mOverrideSimSunPosition = FALSE;
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mSunPhase = 0.f;
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}
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LLSky::~LLSky()
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{
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}
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void LLSky::cleanup()
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{
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mVOSkyp = NULL;
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mVOWLSkyp = NULL;
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mVOGroundp = NULL;
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}
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void LLSky::destroyGL()
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{
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if (!mVOSkyp.isNull() && mVOSkyp->getCubeMap())
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{
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mVOSkyp->cleanupGL();
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}
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if (mVOWLSkyp.notNull())
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{
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mVOWLSkyp->cleanupGL();
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}
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}
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void LLSky::restoreGL()
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{
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if (mVOSkyp)
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{
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mVOSkyp->restoreGL();
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}
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if (mVOWLSkyp)
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{
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mVOWLSkyp->restoreGL();
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}
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}
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void LLSky::resetVertexBuffers()
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{
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if (gSky.mVOSkyp.notNull())
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{
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gPipeline.resetVertexBuffers(gSky.mVOSkyp->mDrawable);
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gPipeline.resetVertexBuffers(gSky.mVOGroundp->mDrawable);
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gPipeline.markRebuild(gSky.mVOSkyp->mDrawable, LLDrawable::REBUILD_ALL, TRUE);
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gPipeline.markRebuild(gSky.mVOGroundp->mDrawable, LLDrawable::REBUILD_ALL, TRUE);
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}
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if (gSky.mVOWLSkyp.notNull())
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{
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gSky.mVOWLSkyp->resetVertexBuffers();
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gPipeline.resetVertexBuffers(gSky.mVOWLSkyp->mDrawable);
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gPipeline.markRebuild(gSky.mVOWLSkyp->mDrawable, LLDrawable::REBUILD_ALL, TRUE);
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}
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}
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void LLSky::setOverrideSun(BOOL override)
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{
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if (!mOverrideSimSunPosition && override)
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{
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mLastSunDirection = getSunDirection();
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}
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else if (mOverrideSimSunPosition && !override)
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{
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setSunDirection(mLastSunDirection, LLVector3::zero);
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}
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mOverrideSimSunPosition = override;
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}
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void LLSky::setSunDirection(const LLVector3 &sun_direction, const LLVector3 &sun_ang_velocity)
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{
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if(mVOSkyp.notNull()) {
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mVOSkyp->setSunDirection(sun_direction, sun_ang_velocity);
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}
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}
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void LLSky::setSunTargetDirection(const LLVector3 &sun_direction, const LLVector3 &sun_ang_velocity)
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{
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mSunTargDir = sun_direction;
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}
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LLVector3 LLSky::getSunDirection() const
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{
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if (mVOSkyp)
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{
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return mVOSkyp->getToSun();
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}
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else
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{
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return LLVector3::z_axis;
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}
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}
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LLVector3 LLSky::getMoonDirection() const
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{
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if (mVOSkyp)
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{
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return mVOSkyp->getToMoon();
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}
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else
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{
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return LLVector3::z_axis;
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}
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}
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LLColor4 LLSky::getSunDiffuseColor() const
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{
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if (mVOSkyp)
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{
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return LLColor4(mVOSkyp->getSunDiffuseColor());
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}
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else
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{
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return LLColor4(1.f, 1.f, 1.f, 1.f);
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}
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}
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LLColor4 LLSky::getSunAmbientColor() const
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{
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if (mVOSkyp)
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{
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return LLColor4(mVOSkyp->getSunAmbientColor());
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}
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else
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{
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return LLColor4(0.f, 0.f, 0.f, 1.f);
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}
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}
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LLColor4 LLSky::getMoonDiffuseColor() const
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{
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if (mVOSkyp)
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{
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return LLColor4(mVOSkyp->getMoonDiffuseColor());
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}
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else
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{
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return LLColor4(1.f, 1.f, 1.f, 1.f);
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}
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}
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LLColor4 LLSky::getMoonAmbientColor() const
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{
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if (mVOSkyp)
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{
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return LLColor4(mVOSkyp->getMoonAmbientColor());
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}
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else
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{
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return LLColor4(0.f, 0.f, 0.f, 0.f);
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}
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}
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LLColor4 LLSky::getTotalAmbientColor() const
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{
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if (mVOSkyp)
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{
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return mVOSkyp->getTotalAmbientColor();
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}
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else
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{
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return LLColor4(1.f, 1.f, 1.f, 1.f);
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}
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}
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BOOL LLSky::sunUp() const
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{
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if (mVOSkyp)
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{
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return mVOSkyp->isSunUp();
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}
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else
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{
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return TRUE;
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}
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}
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LLColor4U LLSky::getFadeColor() const
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{
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if (mVOSkyp)
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{
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return mVOSkyp->getFadeColor();
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}
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else
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{
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return LLColor4(1.f, 1.f, 1.f, 1.f);
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}
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}
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//////////////////////////////////////////////////////////////////////
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// Public Methods
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//////////////////////////////////////////////////////////////////////
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void LLSky::init(const LLVector3 &sun_direction)
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{
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LLGLState::checkStates();
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LLGLState::checkTextureChannels();
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mVOWLSkyp = static_cast<LLVOWLSky*>(gObjectList.createObjectViewer(LLViewerObject::LL_VO_WL_SKY, NULL));
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mVOWLSkyp->initSunDirection(sun_direction, LLVector3::zero);
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gPipeline.createObject(mVOWLSkyp.get());
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LLGLState::checkStates();
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LLGLState::checkTextureChannels();
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mVOSkyp = (LLVOSky *)gObjectList.createObjectViewer(LLViewerObject::LL_VO_SKY, NULL);
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LLGLState::checkStates();
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LLGLState::checkTextureChannels();
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mVOSkyp->initSunDirection(sun_direction, LLVector3());
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LLGLState::checkStates();
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LLGLState::checkTextureChannels();
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gPipeline.createObject((LLViewerObject *)mVOSkyp);
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LLGLState::checkStates();
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LLGLState::checkTextureChannels();
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mVOGroundp = (LLVOGround*)gObjectList.createObjectViewer(LLViewerObject::LL_VO_GROUND, NULL);
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LLVOGround *groundp = mVOGroundp;
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gPipeline.createObject((LLViewerObject *)groundp);
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LLGLState::checkStates();
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LLGLState::checkTextureChannels();
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gSky.setFogRatio(gSavedSettings.getF32("RenderFogRatio"));
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////////////////////////////
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//
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// Legacy code, ignore
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//
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//
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// Get the parameters.
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mSunDefaultPosition = gSavedSettings.getVector3("SkySunDefaultPosition");
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LLGLState::checkStates();
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LLGLState::checkTextureChannels();
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if (gSavedSettings.getBOOL("SkyOverrideSimSunPosition") || mOverrideSimSunPosition)
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{
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setSunDirection(mSunDefaultPosition, LLVector3(0.f, 0.f, 0.f));
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}
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else
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{
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setSunDirection(sun_direction, LLVector3(0.f, 0.f, 0.f));
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}
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LLGLState::checkStates();
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LLGLState::checkTextureChannels();
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mUpdatedThisFrame = TRUE;
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}
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void LLSky::setCloudDensityAtAgent(F32 cloud_density)
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{
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if (mVOSkyp)
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{
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mVOSkyp->setCloudDensity(cloud_density);
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}
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}
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void LLSky::setWind(const LLVector3& average_wind)
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{
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if (mVOSkyp)
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{
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mVOSkyp->setWind(average_wind);
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}
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}
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void LLSky::propagateHeavenlyBodies(F32 dt)
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{
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if (!mOverrideSimSunPosition)
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{
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LLVector3 curr_dir = getSunDirection();
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LLVector3 diff = mSunTargDir - curr_dir;
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const F32 dist = diff.normVec();
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if (dist > 0)
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{
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const F32 step = llmin (dist, 0.00005f);
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//const F32 step = min (dist, 0.0001);
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diff *= step;
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curr_dir += diff;
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curr_dir.normVec();
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if (mVOSkyp)
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{
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mVOSkyp->setSunDirection(curr_dir, LLVector3());
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}
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}
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}
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}
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F32 LLSky::getSunPhase() const
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{
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return mSunPhase;
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}
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void LLSky::setSunPhase(const F32 phase)
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{
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mSunPhase = phase;
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}
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//////////////////////////////////////////////////////////////////////
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// Private Methods
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//////////////////////////////////////////////////////////////////////
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LLColor4 LLSky::getFogColor() const
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{
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if (mVOSkyp)
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{
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return mVOSkyp->getFogColor();
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}
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return LLColor4(1.f, 1.f, 1.f, 1.f);
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}
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void LLSky::updateFog(const F32 distance)
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{
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if (mVOSkyp)
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{
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mVOSkyp->updateFog(distance);
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}
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}
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void LLSky::updateCull()
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{
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// *TODO: do culling for wl sky properly -Brad
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}
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void LLSky::updateSky()
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{
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if (!gPipeline.hasRenderType(LLPipeline::RENDER_TYPE_SKY))
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{
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return;
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}
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if (mVOSkyp)
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{
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mVOSkyp->updateSky();
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}
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}
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void LLSky::setFogRatio(const F32 fog_ratio)
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{
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if (mVOSkyp)
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{
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mVOSkyp->setFogRatio(fog_ratio);
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}
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}
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F32 LLSky::getFogRatio() const
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{
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if (mVOSkyp)
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{
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return mVOSkyp->getFogRatio();
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}
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else
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{
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return 0.f;
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}
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}
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// Returns angle (DEGREES) between the horizontal plane and "v",
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// where the angle is negative when v.mV[VZ] < 0.0f
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F32 elevation_from_vector(const LLVector3 &v)
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{
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F32 elevation = 0.0f;
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F32 xy_component = (F32) sqrt(v.mV[VX] * v.mV[VX] + v.mV[VY] * v.mV[VY]);
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if (xy_component != 0.0f)
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{
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elevation = RAD_TO_DEG * (F32) atan(v.mV[VZ]/xy_component);
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}
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else
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{
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if (v.mV[VZ] > 0.f)
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{
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elevation = 90.f;
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}
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else
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{
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elevation = -90.f;
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}
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}
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return elevation;
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}
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